The map shows quakes of M1.5 and up from the last 90 days, the 8 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.
In the last 30 days, 1 earthquakes of M1.5 or bigger were recorded within 100 km of Challis, the biggest of them M2.2. Over the past year, M3.0+ quakes near Challis came at 0.1× the usual pace — quieter than normal for this area. The biggest quake on record near Challis — records go back to 1980 — was the M6.9 of Oct 28, 1983, 14:06 UTC: The 1983 Borah Peak Earthquake, Idaho.
How we figure this: 4 quakes of M3.0 or bigger within 100 km in the last 12 months (Nov 03, 2025 – Nov 03, 2026), compared with an average of 44.4 a year across the full calendar years 2016–2025, counted the same way. This compares how often quakes happened in two past periods. It is not a forecast, and it does not mean a big earthquake is on its way — nobody can predict earthquakes.
Latest earthquakes near Challis
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M2.2 | 21 km W of Clayton, Idaho | Oct 15, 2026, 10:09 AM | 7 km | 46 km SW |
| M1.6 | 21 km N of Challis, Idaho | Oct 01, 2026, 05:00 AM | 4 km | 22 km N |
| M3.2 | 22 km NW of Stanley, Idaho | Sep 11, 2026, 07:52 PM | 10 km | 76 km WSW |
| M3.3 | 21 km WNW of Stanley, Idaho | Sep 06, 2026, 09:35 AM | 10 km | 78 km WSW |
| M2.9 | 4 km NNE of Stanley, Idaho | Sep 05, 2026, 04:03 AM | 10 km | 61 km WSW |
| M1.7 | 25 km SSE of Challis, Idaho | Aug 26, 2026, 05:11 PM | 9 km | 26 km SSE |
| M2.0 | 8 km SSW of Challis, Idaho | Aug 17, 2026, 01:32 AM | 9 km | 9 km SSW |
| M1.6 | 52 km NNW of Challis, Idaho | Aug 12, 2026, 02:55 AM | 12 km | 52 km NNW |
| M2.8 | 23 km WNW of Stanley, Idaho | Aug 12, 2026, 12:11 AM | 15 km | 83 km WSW |
| M2.3 | 7 km E of Challis, Idaho | Aug 08, 2026, 10:27 PM | 10 km | 7 km E |
Earthquakes per year near Challis (M3.0 and up, within 100 km)
M3.0–3.9 M4.0+
Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.
What the last year looked like near Challis
Every quake of M1.5 or bigger within 100 km over the last year — 39 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 8 biggest earthquakes on record near Challis (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M6.9 | The 1983 Borah Peak Earthquake, Idaho | Oct 28, 1983, 14:06 UTC | 58 km |
| M6.5 | Stanley, Idaho | Mar 31, 2020, 23:52 UTC | 70 km |
| M5.6 | 18 km ESE of Challis, Idaho | Aug 22, 1984, 09:46 UTC | 18 km |
| M5.5 | 22 km E of Clayton, Idaho | Oct 29, 1983, 23:39 UTC | 27 km |
| M5.4 | 23 km E of Clayton, Idaho | Oct 29, 1983, 23:29 UTC | 32 km |
| M5.4 | 29 km NW of Mackay, Idaho | Oct 28, 1983, 19:51 UTC | 54 km |
| M5.1 | 9 km SE of Challis, Idaho | Sep 08, 1984, 06:16 UTC | 10 km |
| M5.0 | 9 km E of Challis, Idaho | Jan 03, 2015, 17:44 UTC | 9 km |
Nearby places
Salmon, ID (79 km) · Sun Valley, ID (90 km) · Ketchum, ID (92 km)
USGS data fetched Nov 03, 2026, 17:10 UTC · page built Nov 03, 2026, 17:11 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.